{"id":471,"date":"2022-09-28T16:23:13","date_gmt":"2022-09-28T10:53:13","guid":{"rendered":"https:\/\/innovareacademics.in\/blog\/?p=471"},"modified":"2022-09-28T16:27:57","modified_gmt":"2022-09-28T10:57:57","slug":"concave-lens-definition-image-and-uses","status":"publish","type":"post","link":"https:\/\/innovareacademics.in\/blog\/concave-lens-definition-image-and-uses\/","title":{"rendered":"Concave Lens: Definition, Lens Formula, Image Formation and Uses"},"content":{"rendered":"<div id=\"bsf_rt_marker\"><\/div>\n<h1 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Concave_Lens\"><\/span>Concave Lens<span class=\"ez-toc-section-end\"><\/span><\/h1><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/innovareacademics.in\/blog\/concave-lens-definition-image-and-uses\/#Concave_Lens\" >Concave Lens<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/innovareacademics.in\/blog\/concave-lens-definition-image-and-uses\/#What_is_a_Concave_Lens\" >What is a Concave Lens?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/innovareacademics.in\/blog\/concave-lens-definition-image-and-uses\/#Concave_Lens_Formula\" >Concave Lens Formula<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/innovareacademics.in\/blog\/concave-lens-definition-image-and-uses\/#Image_Formation_in_Concave_Lens\" >Image Formation in Concave Lens<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/innovareacademics.in\/blog\/concave-lens-definition-image-and-uses\/#Image_formation1\" >Image formation1:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/innovareacademics.in\/blog\/concave-lens-definition-image-and-uses\/#Image_formation2\" >Image formation2:<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/innovareacademics.in\/blog\/concave-lens-definition-image-and-uses\/#Uses_of_Concave_Lens\" >Uses of Concave Lens<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/innovareacademics.in\/blog\/concave-lens-definition-image-and-uses\/#Used_in_Telescope\" >Used in Telescope<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/innovareacademics.in\/blog\/concave-lens-definition-image-and-uses\/#Used_in_Eye_Glasses\" >Used in Eye Glasses<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/innovareacademics.in\/blog\/concave-lens-definition-image-and-uses\/#Used_in_Peepholes\" >Used in Peepholes<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n\n\n\n\n<p class=\"wp-block-paragraph\">We have been able to achieve some astounding pretty things with lenses over many centuries of living human beings. Although we don\u2019t know when or when the first person discovered the concept of the lens, it is evident that at some point in history, the people of ancient times, most likely from the Near East, learned that they could easily alter the term light by using a shaped piece of glass.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">As people discovered that they could accomplish different things by utilizing different lens shapes, how and for what lens purposes were utilized continued to increase day by day over the later ages or centuries.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For decades, humans have used lenses to do a variety of things. From making something appear larger to making something appear closer, lenses can be used for a variety of purposes. They\u2019ve been doing this without knowing the many sorts of lenses or their characteristics, among other things. People used to think that lenses were just bits of glass that could alter light. Years later, the lenses were divided into two groups. They are as follows:-<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"https:\/\/testbook.com\/learn\/physics-convex-lens\/\" target=\"_blank\" rel=\"noopener\">Convex Lens<\/a><\/li><li>Concave lens<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Here let\u2019s look closely into the Concave lens and its characteristics, formula, image formation and uses in detail.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_a_Concave_Lens\"><\/span>What is a Concave Lens?<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">A <a href=\"https:\/\/testbook.com\/learn\/physics-concave-lens\/\" target=\"_blank\" rel=\"noopener\">concave lens<\/a> diverges a straight light beam from the source to produce a reduced, upright virtual image. It can generate both physical and virtual images. At least one inward curved surface is present on the concave lens. A diverging lens is a concave lens that is shaped round inwards in the centre and bulges outwards through the edges, causing light to diverge. They are used to treat myopia by making distant objects appear smaller than they are.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Concave_Lens_Formula\"><\/span>Concave Lens Formula<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">The concave lens formula is used to determine the nature and position of the image created by the lens. The following is the lens formula:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1\/f= 1\/v+1\/u<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">where,<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">f = focal length<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">v = Image\u2019s distance from the centre<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">u = Object\u2019s distance from the centre.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Similarly, the image magnification is provided by the equation,<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;M= h<sub>i<\/sub>\/h<sub>o<\/sub>=v\/u<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">where,<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M = magnification&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">h<sub>i<\/sub> = height of the image<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">h<sub>o<\/sub> = height of the object.<\/p>\n\n\n\n<p class=\"has-luminous-vivid-orange-color has-text-color wp-block-paragraph\">Also Read: <a href=\"https:\/\/innovareacademics.in\/blog\/%e0%a4%b5%e0%a5%8b%e0%a4%9f%e0%a4%b0-%e0%a4%86%e0%a4%88%e0%a4%a1%e0%a5%80-%e0%a4%95%e0%a5%8b-%e0%a4%86%e0%a4%a7%e0%a4%be%e0%a4%b0-%e0%a4%95%e0%a4%be%e0%a4%b0%e0%a5%8d%e0%a4%a1-%e0%a4%b8%e0%a5%87\/\">\u0935\u094b\u091f\u0930 \u0906\u0908\u0921\u0940 \u0915\u094b \u0906\u0927\u093e\u0930 \u0915\u093e\u0930\u094d\u0921 \u0938\u0947 \u0932\u093f\u0902\u0915 \u0915\u0930\u0947\u0902\/\u091c\u094b\u0921\u093c\u0947\u0902: 2 minutes \u092e\u0947\u0902 \u0918\u0930 \u092c\u0948\u0920\u0947<\/a><\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><a href=\"https:\/\/innovareacademics.in\/blog\/%e0%a4%b5%e0%a5%8b%e0%a4%9f%e0%a4%b0-%e0%a4%86%e0%a4%88%e0%a4%a1%e0%a5%80-%e0%a4%95%e0%a5%8b-%e0%a4%86%e0%a4%a7%e0%a4%be%e0%a4%b0-%e0%a4%95%e0%a4%be%e0%a4%b0%e0%a5%8d%e0%a4%a1-%e0%a4%b8%e0%a5%87\/\"><img decoding=\"async\" src=\"https:\/\/innovareacademics.in\/blog\/wp-content\/uploads\/2022\/09\/Front-Hindi-1024x647.jpg\" alt=\"\u0935\u094b\u091f\u0930 \u0906\u0908\u0921\u0940 \u0915\u094b \u0906\u0927\u093e\u0930 \u0915\u093e\u0930\u094d\u0921 \u0938\u0947 \u0932\u093f\u0902\u0915 \u0915\u0930\u0947\u0902\" class=\"wp-image-451\" width=\"256\" height=\"162\" title=\"\" srcset=\"https:\/\/innovareacademics.in\/blog\/wp-content\/uploads\/2022\/09\/Front-Hindi-1024x647.jpg 1024w, https:\/\/innovareacademics.in\/blog\/wp-content\/uploads\/2022\/09\/Front-Hindi-300x189.jpg 300w, https:\/\/innovareacademics.in\/blog\/wp-content\/uploads\/2022\/09\/Front-Hindi-768x485.jpg 768w, https:\/\/innovareacademics.in\/blog\/wp-content\/uploads\/2022\/09\/Front-Hindi-150x95.jpg 150w, https:\/\/innovareacademics.in\/blog\/wp-content\/uploads\/2022\/09\/Front-Hindi-696x439.jpg 696w, https:\/\/innovareacademics.in\/blog\/wp-content\/uploads\/2022\/09\/Front-Hindi-1068x674.jpg 1068w, https:\/\/innovareacademics.in\/blog\/wp-content\/uploads\/2022\/09\/Front-Hindi-665x420.jpg 665w, https:\/\/innovareacademics.in\/blog\/wp-content\/uploads\/2022\/09\/Front-Hindi.jpg 1145w\" sizes=\"(max-width: 256px) 100vw, 256px\" \/><\/a><figcaption>\u0935\u094b\u091f\u0930 \u0906\u0908\u0921\u0940 \u0915\u094b \u0906\u0927\u093e\u0930 \u0915\u093e\u0930\u094d\u0921 \u0938\u0947 \u0932\u093f\u0902\u0915 \u0915\u0930\u0947\u0902<\/figcaption><\/figure>\n\n\n\n<h1 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Image_Formation_in_Concave_Lens\"><\/span>Image Formation in Concave Lens<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">An object positioned at infinity creates a virtual image at the focus. The image is substantially smaller in size than the object.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Image_formation1\"><\/span>Image formation1:<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/docs.google.com\/document\/d\/1bTJhGirmZDP5sIYf34NqPjpBncQ5nUi20epEH8iGO60\/edit?usp=sharing\" target=\"_blank\" rel=\"noopener\">https:\/\/docs.google.com\/document\/d\/1bTJhGirmZDP5sIYf34NqPjpBncQ5nUi20epEH8iGO60\/edit?usp=sharing<\/a><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\" id=\"Concave-Lens-image-formation\"><img fetchpriority=\"high\" decoding=\"async\" width=\"869\" height=\"372\" src=\"https:\/\/innovareacademics.in\/blog\/wp-content\/uploads\/2022\/09\/1-3.jpg\" alt=\"Concave Lens\" class=\"wp-image-474\" title=\"Concave Lens\" srcset=\"https:\/\/innovareacademics.in\/blog\/wp-content\/uploads\/2022\/09\/1-3.jpg 869w, https:\/\/innovareacademics.in\/blog\/wp-content\/uploads\/2022\/09\/1-3-300x128.jpg 300w, https:\/\/innovareacademics.in\/blog\/wp-content\/uploads\/2022\/09\/1-3-768x329.jpg 768w, https:\/\/innovareacademics.in\/blog\/wp-content\/uploads\/2022\/09\/1-3-150x64.jpg 150w, https:\/\/innovareacademics.in\/blog\/wp-content\/uploads\/2022\/09\/1-3-696x298.jpg 696w\" sizes=\"(max-width: 869px) 100vw, 869px\" \/><figcaption>Concave Lens <br>Source: byjus.com<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">An object at a finite distance from the lens produces a virtual image between the pole and the focus of the convex lens. As a result, the image is less in size than the thing.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Image_formation2\"><\/span>Image formation2:<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/docs.google.com\/document\/d\/1SXAVAUyTk31-HoiTP11FsqebJodEjcaAbB1Md0PzCwE\/edit?usp=sharing\" target=\"_blank\" rel=\"noopener\">https:\/\/docs.google.com\/document\/d\/1SXAVAUyTk31-HoiTP11FsqebJodEjcaAbB1Md0PzCwE\/edit?usp=sharing<\/a><\/p>\n\n\n\n<figure class=\"wp-block-image size-full Concave Lens-image-formation\" id=\"Concave-Lens\"><img decoding=\"async\" width=\"797\" height=\"399\" src=\"https:\/\/innovareacademics.in\/blog\/wp-content\/uploads\/2022\/09\/2-1.jpg\" alt=\"Concave Lens\" class=\"wp-image-476\" title=\"Concave Lens\" srcset=\"https:\/\/innovareacademics.in\/blog\/wp-content\/uploads\/2022\/09\/2-1.jpg 797w, https:\/\/innovareacademics.in\/blog\/wp-content\/uploads\/2022\/09\/2-1-300x150.jpg 300w, https:\/\/innovareacademics.in\/blog\/wp-content\/uploads\/2022\/09\/2-1-768x384.jpg 768w, https:\/\/innovareacademics.in\/blog\/wp-content\/uploads\/2022\/09\/2-1-150x75.jpg 150w, https:\/\/innovareacademics.in\/blog\/wp-content\/uploads\/2022\/09\/2-1-696x348.jpg 696w\" sizes=\"(max-width: 797px) 100vw, 797px\" \/><figcaption>Concave Lens<br>Source: byjus.com<\/figcaption><\/figure>\n\n\n\n<h1 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Uses_of_Concave_Lens\"><\/span>Uses of Concave Lens<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">The following are some examples of applications:<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Used_in_Telescope\"><\/span>Used in Telescope<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">In telescopes and binoculars, these are used to magnify objects. Because a convex lens causes blurring and distortion, telescope and binocular manufacturers put concave lenses before or in the eyepiece to improve focus.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Used_in_Eye_Glasses\"><\/span>Used in Eye Glasses<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">These are often used to cure myopia, also known as nearsightedness. Myopia causes the eyeball to be overly long, and images of distant objects fall short of the retina. As a result, concave lenses are utilized in spectacles to compensate for the shortage by spreading out the light rays before they reach the eyeball. This improves the person\u2019s ability to see distant objects clearly.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Used_in_Peepholes\"><\/span>Used in Peepholes<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Peepholes, sometimes known as door viewers, are security devices that provide a 360-degree view of items beyond walls or doors. It is used to reduce the proportions of objects while providing a wider view of the object or area.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Disclaimer: This post is for educational purpose.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Concave Lens We have been able to achieve some astounding pretty things with lenses over many centuries of living human [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":478,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[2,94],"tags":[512,514,518,516,515,517,513,519],"class_list":["post-471","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-educational","category-public-knowledge","tag-concave-lens","tag-concave-lens-defination","tag-concave-lens-examples","tag-concave-lens-formula","tag-concave-lens-image-formation","tag-concave-lens-images","tag-concave-lens-uses","tag-what-are-concave-lenses"],"uagb_featured_image_src":{"full":["https:\/\/innovareacademics.in\/blog\/wp-content\/uploads\/2022\/09\/Front-3.jpg",798,738,false],"thumbnail":["https:\/\/innovareacademics.in\/blog\/wp-content\/uploads\/2022\/09\/Front-3-150x150.jpg",150,150,true],"medium":["https:\/\/innovareacademics.in\/blog\/wp-content\/uploads\/2022\/09\/Front-3-300x277.jpg",300,277,true],"medium_large":["https:\/\/innovareacademics.in\/blog\/wp-content\/uploads\/2022\/09\/Front-3-768x710.jpg",768,710,true],"large":["https:\/\/innovareacademics.in\/blog\/wp-content\/uploads\/2022\/09\/Front-3.jpg",798,738,false],"1536x1536":["https:\/\/innovareacademics.in\/blog\/wp-content\/uploads\/2022\/09\/Front-3.jpg",798,738,false],"2048x2048":["https:\/\/innovareacademics.in\/blog\/wp-content\/uploads\/2022\/09\/Front-3.jpg",798,738,false]},"uagb_author_info":{"display_name":"Avijeet Jain","author_link":"https:\/\/innovareacademics.in\/blog\/author\/avijeet\/"},"uagb_comment_info":0,"uagb_excerpt":"Concave Lens We have been able to achieve some astounding pretty things with lenses over many centuries of living human 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